I want to save 2 figures created at different parts of a script into a PDF using PdfPages, is it possible to append them to the pdf? Example: Answer Sorry, that’s a lame question. We just shouldn’t use the with statement.
Inline for loop
I’m trying to learn neat pythonic ways of doing things, and was wondering why my for loop cannot be refactored this way: I tried replacing the for loop with: But it doesn’t work. The for v in vm: loop evicts numbers from vm based on when they come next in q. Answer What you are using is called a l…
How to loop over grouped Pandas dataframe?
DataFrame: Code: I’m trying to just loop over the aggregated data, but I get the error: ValueError: too many values to unpack @EdChum, here’s the expected output: The output is not the problem, I wish to loop over every group. Answer df.groupby(‘l_customer_id_i’).agg(lambda x: ‘,…
Installing Hiredis with pip on windows machine
I´ve been trying to install Hiredis in my virtual environment. I developing in windows 7. At first i got the vcvarsall.bat error (or something like that). I read a lot of blogs and suggestions to this problem but i found no suitable answer. I tried “Windows GCC (MinGW) binaries for Python developersR…
What am doing wrong in this piece of fibonacci code in python docs vs my re implementation?
Python docs: My reimplementation: Answer The difference between and is that in the second one, a is assigned value of b, and then b is assigned the sum of a and b, which means it is twice its original value. Consider: This gives Contrarily: which gives:
How do you represent missing data in a Pandas DataFrame?
Does Pandas have an equivalent of R’s na (meaning not available)? If not, what is the convention for representing a missing value, as opposed to NaN which represents a mathematically impossible value such as a divide by zero? Answer Currently there is no NA value available in Pandas or NumPy. From the s…
Make division by zero equal to zero
How can I ignore ZeroDivisionError and make n / 0 == 0? Answer Check if the denominator is zero before dividing. This avoids the overhead of catching the exception, which may be more efficient if you expect to be dividing by zero a lot.
Python: Random System time seed
In python, and assuming I’m on a system which has a random seed generator, how do I get random.seed() to use system time instead? (As if /dev/urandom did not exist) Answer
How to run Debug server for Django project in PyCharm Community Edition?
Has anyone had issues setting up a debug configuration for Django project in PyCharm Community Edition? Community Edition of the IDE is lacking the project type option on project setup and then when I am setting up Debug or Run config it asks me for a script it should run. What script would it be for Django, …
Python: Matplotlib avoid plotting gaps
I am currently generating the plot below: with this code: where intra.to_pydatetime() is a: <bound method DatetimeIndex.to_pydatetime of <class ‘pandas.tseries.index.DatetimeIndex’> [2011-01-03 09:35:00, …, 2011-01-07 16:00:00] Length: 390, Freq: None, Timezone: None> So the date…